Liverpool's No.23 started his country's friendly against USA in St Gallen before being substituted at half-time. Switzerland won the match 2-1.
Seventeen-year-old Academy defender Bradley, meanwhile, came off the bench late on as Northern Ireland beat Malta 3-0.
"It was unreal," Bradley said.
"The gaffer came over to me and said, 'You're getting on'. I just had goosebumps and it was an unbelievable moment. I'm proud of me and my family. Just unreal."